GENTOS LED USB Rechargeable Dedicated Rechargeable Battery or AA Powerful 1200 G for Professional Use GH-200RG Headlamp, (with Batteries), Lumens,

Size (approx.): Head: 65mm W x 62mm D x 60.5mm H, Battery box: 118.1mm W x 43.3mm D x 70.1mm H, Weight: Approx. 379g Set contents and accessories: Main unit, non-slip headband, silicone band (4 buckles), helmet holder (4), Micro USB cable (50cm), dedicated magnetic charging cable, magnetic cap, dedicated AC adapter (5V / 2A), dedicated rechargeable battery (built-in) Brightness: Max/1200 lumens, High/500 lumens, Mid/250 lumens, Eco/50 lumens; Battery: Dedicated rechargeable battery or 4 AA alkaline batteries (sold separately) Practical use: Max/7 hours, High/9 hours, Mid/15 hours, Eco/78 hours, Rear warning light on/560 hours, Rear warning light flashing/560 hours Features: 2m drop resistance, dustproof and water resistant (IP66 compliant), maximum beam distance: approximately 283m